Charter Communications Inc. dropped marketing a $4.2 billion portion of a loan deal financing its purchase of assets from Comcast Corp., according to a person with knowledge of the matter.

The company raised the interest rate on another part of the deal to 3.5 percentage points more than benchmark rates from a previously proposed range of 2.75 percentage points to 3 percentage points, according to the person, who asked not to be named because the terms aren't public.

The size of that loan was raised to at least $3.5 billion from $3.2 billion, the person said. It's also being sold at a discount of 99 cents on the dollar, cheaper to investors than a previous offer of 99.5 cents, according to the person.

At least three companies failed to get deals completed last week in the market for speculative-grade corporate loans as investors staged the biggest retreat since 2011. U.S. funds that invest in leveraged loans saw $1.5 billion in outflows during the week ended Aug. 6, the biggest withdrawal since August 2011, according to Lipper.

Goldman Sachs Group Inc. is leading the deal. Michael DuVally, a Goldman Sachs spokesman, declined to comment.